/*
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 * the License.  
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package drds.server.memory.unsafe.utils;

public enum ByteUnit {
	BYTE(1), KiB(1024L), MiB((long) Math.pow(1024L, 2L)), GiB((long) Math.pow(1024L, 3L)), TiB((long) Math.pow(1024L, 4L)), PiB((long) Math.pow(1024L, 5L)), ;

	ByteUnit(long multiplier) {
		this.multiplier = multiplier;
	}

	// Interpret the provided number (d) with suffix (u) as this unit type.
	// E.g. KiB.interpret(1, MiB) interprets 1MiB as its KiB representation =
	// 1024k
	public long convertFrom(long d, ByteUnit u) {
		return u.convertTo(d, this);
	}

	// Convert the provided number (d) interpreted as this unit type to unit
	// type (u).
	public long convertTo(long d, ByteUnit u) {
		if (multiplier > u.multiplier) {
			long ratio = multiplier / u.multiplier;
			if (Long.MAX_VALUE / ratio < d) {
				throw new IllegalArgumentException("Conversion of " + d + " exceeds Long.MAX_VALUE in " + name() + ". Try a larger unit (e.g. MiB instead of KiB)");
			}
			return d * ratio;
		} else {
			// Perform operations in this order to avoid potential overflow
			// when computing d * multiplier
			return d / (u.multiplier / multiplier);
		}
	}

	public double toBytes(long d) {
		if (d < 0) {
			throw new IllegalArgumentException("Negative size value. Size must be positive: " + d);
		}
		return d * multiplier;
	}

	public long toKiB(long d) {
		return convertTo(d, KiB);
	}

	public long toMiB(long d) {
		return convertTo(d, MiB);
	}

	public long toGiB(long d) {
		return convertTo(d, GiB);
	}

	public long toTiB(long d) {
		return convertTo(d, TiB);
	}

	public long toPiB(long d) {
		return convertTo(d, PiB);
	}

	private final long multiplier;
}
